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5w30 vs 10w30 #4784244
06/11/18 07:40 PM
06/11/18 07:40 PM
Joined: Jun 2018
Posts: 48
Kentucky
Spitter Offline OP
Spitter  Offline OP
Joined: Jun 2018
Posts: 48
Kentucky
If temps are above freezing could 10w30 offer more cold start protection than 5w30 in a vehicle that calls for 5w30? What temps would make 5w the better choice?


2004 Silverado 5.3
Pennzoil ultra platinum 10w30 acdelco upf44
2006 Buick lucerne 3.8
Pennzoil ultra platinum 5w30 acdelco pf47
Re: 5w30 vs 10w30 [Re: Spitter] #4784248
06/11/18 07:44 PM
06/11/18 07:44 PM
Joined: May 2012
Posts: 1,571
The land of USA-made Subies!
SubieRubyRoo Offline
SubieRubyRoo  Offline
Joined: May 2012
Posts: 1,571
The land of USA-made Subies!
they're both still a 30 weight, and 5wXX will flow more quickly. I'd go with quicker lubrication vs. thicker anytime.

That said, in KY you can likely use 10W30 year round if your vehicles are garaged.

Re: 5w30 vs 10w30 [Re: Spitter] #4784252
06/11/18 07:48 PM
06/11/18 07:48 PM
Joined: Mar 2015
Posts: 5,099
Virginia
bbhero Online content
bbhero  Online Content
Joined: Mar 2015
Posts: 5,099
Virginia
There would be no difference between the two around 32F or above. Zero difference. At say -15F the 5w would have an advantage for sure. The test for CCS and MRV for 10w is at -25C or -13F. So at -15F a 10w would be able to work. Though the 5w would be better given it's tested at -30C for CCS and tested at -35C for MRV.


Nissan Altima 3.5 Coupe
Quaker State High Mileage 5w30 Purolator Boss 14610
"Treat your family like your friends and treat your friends like your family."
Re: 5w30 vs 10w30 [Re: Spitter] #4784264
06/11/18 08:01 PM
06/11/18 08:01 PM
Joined: Jun 2018
Posts: 48
Kentucky
Spitter Offline OP
Spitter  Offline OP
Joined: Jun 2018
Posts: 48
Kentucky
A full syn 10w would flow better than a 5w conventional correct?


2004 Silverado 5.3
Pennzoil ultra platinum 10w30 acdelco upf44
2006 Buick lucerne 3.8
Pennzoil ultra platinum 5w30 acdelco pf47
Re: 5w30 vs 10w30 [Re: Spitter] #4784268
06/11/18 08:04 PM
06/11/18 08:04 PM
Joined: Mar 2015
Posts: 5,099
Virginia
bbhero Online content
bbhero  Online Content
Joined: Mar 2015
Posts: 5,099
Virginia
No. Not at all. A 5w would flow better than a 10w unless it was very, very cold outside. Like -15F or colder.


Nissan Altima 3.5 Coupe
Quaker State High Mileage 5w30 Purolator Boss 14610
"Treat your family like your friends and treat your friends like your family."
Re: 5w30 vs 10w30 [Re: Spitter] #4784271
06/11/18 08:06 PM
06/11/18 08:06 PM
Joined: Nov 2006
Posts: 20,121
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 20,121
MA, Mittelfranken.de
Check out the NOACK numbers on 10w30 they are usually lower than 5w30, In your part of the country this could result in less varnish and deposits in the intake tract. 5w30 will have no benefits over it.


ASE L1, Master. Deutsch Meisterbrief.
Re: 5w30 vs 10w30 [Re: Trav] #4784283
06/11/18 08:18 PM
06/11/18 08:18 PM
Joined: Mar 2015
Posts: 5,099
Virginia
bbhero Online content
bbhero  Online Content
Joined: Mar 2015
Posts: 5,099
Virginia
Trav the funny thing I noticed with the PQIA test results for 10w30 showed that Warren Oil 10w30 had the best NOACK at 7.6. All of the others were above 10 up to 13. So a oil made by Warren Oil beat Havoline and the others.

I hope your eyes are doing ok. Take care of yourself.


Nissan Altima 3.5 Coupe
Quaker State High Mileage 5w30 Purolator Boss 14610
"Treat your family like your friends and treat your friends like your family."
Re: 5w30 vs 10w30 [Re: Spitter] #4784284
06/11/18 08:18 PM
06/11/18 08:18 PM
Joined: Aug 2017
Posts: 546
Nebraska
BJD78 Offline
BJD78  Offline
Joined: Aug 2017
Posts: 546
Nebraska
5w30 is going to flow much better at very cold temps -10, -20 and below,but lots of older vehicles used to use 10w30 and 10w40 and still start in -20, and even -30 temps. I grew up in North Dakota ..Fargo and back in 60's and 70's my dad started the big V8 F150 and our ford Galaxy many times in temps well below -20 with a few -30 temps tossed in with 10w40 in the sump. Of course he did use a battery heater and sometimes just a small shot of starting fluid , but they always started.

Now many newer vehicles of today use 0w20 which can go to even lower temps. I think that 0w20 is probably found only in synthetic or semi synthetic though. Anything colder than -30 and I am staying home.


2010 Forester:122K
2009 Sonata :189K
2010 Tucson:55K

OCI 5K using the cheapest dino oil I can buy,usually NAPA or TSC Travelers oil.
Re: 5w30 vs 10w30 [Re: Spitter] #4784303
06/11/18 08:37 PM
06/11/18 08:37 PM
Joined: Dec 2005
Posts: 10,023
Upper Midwest
kschachn Offline
kschachn  Offline
Joined: Dec 2005
Posts: 10,023
Upper Midwest
Originally Posted By: Spitter
A full syn 10w would flow better than a 5w conventional correct?

And its not about flow, its about pumpability. Both the synthetic and the conventional will pump down to the limit of pumpabilty for whatever the W rating happens to be, they both have to meet the same spec.


1994 BMW 530i, 231K
1996 Honda Accord, 263K
1999 Toyota Sienna, 402K
2000 Toyota ECHO, 272K
Re: 5w30 vs 10w30 [Re: Spitter] #4784339
06/11/18 09:06 PM
06/11/18 09:06 PM
Joined: Oct 2004
Posts: 5,742
Texas, Mentone for work, Galve...
Bryanccfshr Offline
Bryanccfshr  Offline
Joined: Oct 2004
Posts: 5,742
Texas, Mentone for work, Galve...
As long as the temperature is above the minimum pump ability limits of each oil. both oils will lubricate and circulate at the same speed. There is no difference. No additional protection from thinner, nothing. Pumpable is pumpable.
This myth of faster circulation is false.


2018 Trd Pro 4Runner M1 0w40
2018 Tacoma off-road Castrol 5w30 Magnatec
Re: 5w30 vs 10w30 [Re: Spitter] #4784496
06/12/18 04:14 AM
06/12/18 04:14 AM
Joined: Jul 2017
Posts: 384
WA
OilUzer Online content
OilUzer  Online Content
Joined: Jul 2017
Posts: 384
WA
Some may argue as follow:

Doesn't 10W30 have less vii and possibly lower Noack?

Didn't we also have a recent thread about xWy and selecting lowest (y-x) that meets the spec.
Meaning to select the highest x that meets your W.

Therefore 10W-30 over 5W-30 if 10W meets your winter temp. requirements.

some may argue that we maybe splitting hairs ...

Having said that, I am 1000 miles into M1 EP 10W-30 and I like it VERY much! In winter i was using PPPP 5W30.

Re: 5w30 vs 10w30 [Re: OilUzer] #4784510
06/12/18 05:15 AM
06/12/18 05:15 AM
Joined: Dec 2017
Posts: 1,154
US
JLTD Offline
JLTD  Offline
Joined: Dec 2017
Posts: 1,154
US
Originally Posted By: OilUzer
Some may argue as follow:

Doesn't 10W30 have less vii and possibly lower Noack?

Didn't we also have a recent thread about xWy and selecting lowest (y-x) that meets the spec.
Meaning to select the highest x that meets your W.

Therefore 10W-30 over 5W-30 if 10W meets your winter temp. requirements.

some may argue that we maybe splitting hairs ...

Having said that, I am 1000 miles into M1 EP 10W-30 and I like it VERY much! In winter i was using PPPP 5W30.





Yep, several threads on that lately. What's your vehicle spc'd for in the manual?

I'll be going 5w30, and once used up maybe 10w30 in the 4Runner which is spec'd 0w20 for CAFE.


I'm a thickie; assimilate
But 20s have their place

Using AMSOIL

Hers: 2008 Jeep Liberty 138k, SS 5w30/Amsoil

His: 2015 4Runner 41k, OE 5w20/Wix

Re: 5w30 vs 10w30 [Re: JLTD] #4784514
06/12/18 05:39 AM
06/12/18 05:39 AM
Joined: Jul 2017
Posts: 384
WA
OilUzer Online content
OilUzer  Online Content
Joined: Jul 2017
Posts: 384
WA
Originally Posted By: JLTD
... What's your vehicle spc'd for in the manual?

I'll be going 5w30, and once used up maybe 10w30 in the 4Runner which is spec'd 0w20 for CAFE


Spec for this car is 5W-20 (recommended) or 5W-30 or 10W-30 and there is temp chart to select either 5W or 10W ...

I have never used 5W-20 and can use either 5W or 10W all year! They both meet the W spec in my area BUT I like to split hairs ... lol

Re: 5w30 vs 10w30 [Re: Spitter] #4784516
06/12/18 05:41 AM
06/12/18 05:41 AM
Joined: Dec 2017
Posts: 1,154
US
JLTD Offline
JLTD  Offline
Joined: Dec 2017
Posts: 1,154
US
thumbsup Thanks--


I'm a thickie; assimilate
But 20s have their place

Using AMSOIL

Hers: 2008 Jeep Liberty 138k, SS 5w30/Amsoil

His: 2015 4Runner 41k, OE 5w20/Wix

Re: 5w30 vs 10w30 [Re: Spitter] #4784527
06/12/18 06:10 AM
06/12/18 06:10 AM
Joined: Jun 2011
Posts: 1,758
Crawfordville FL
SilverFusion2010 Offline
SilverFusion2010  Offline
Joined: Jun 2011
Posts: 1,758
Crawfordville FL
Id pick the 10w-30 unless you need the 5w cold rating for starting. 10w is considered good to 0F


2010 Ford Fusion SE 3.0L V6, 178k miles M1 HM 10w-30
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